From patchwork Tue Aug 2 07:47:15 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Xiaoyao Li X-Patchwork-Id: 12934300 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 1DF36C00140 for ; Tue, 2 Aug 2022 07:48:35 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S236153AbiHBHsb (ORCPT ); Tue, 2 Aug 2022 03:48:31 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:53940 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S236155AbiHBHsZ (ORCPT ); Tue, 2 Aug 2022 03:48:25 -0400 Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id CB19B4D157 for ; Tue, 2 Aug 2022 00:48:17 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1659426497; x=1690962497; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=HWmkOQ+U91dwMbO8ibq7fYEoh0lSkywusXuLHtXS+IY=; b=Aec30sHu3IEwblyyPWBOX40BqxlAGhmdXXlgrQKzDcwo1Qrqngu7lUPu RjXkrT/QLsf/8Is8NwGRDOqD+jlNbLIPoSsQAI0Ki+SQ0RwsLtlsQXQs1 C9chepR6eaxeJ18V4HI/QhAI08KH+2vH/54rx8UjG6vDmx9r/Fk2FyLcC focrmjAKeL89uU0ZtrrXydHkPJh5lYVvVCb0KJrnkrQm5d0zx2EPD3ol7 e1Lgp2N479IamG90z7gWqRsMhF4qBhhQqWeltOOPKte5/NAfeVmodaBBa VlZUBQ1SLDlvZ6URel1ivkgbUGO6GWB1BQYOyViaLN/uATtJfeCVFyQ34 Q==; X-IronPort-AV: E=McAfee;i="6400,9594,10426"; a="286908452" X-IronPort-AV: E=Sophos;i="5.93,210,1654585200"; d="scan'208";a="286908452" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 02 Aug 2022 00:48:17 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.93,210,1654585200"; d="scan'208";a="630603831" Received: from lxy-dell.sh.intel.com ([10.239.48.38]) by orsmga008.jf.intel.com with ESMTP; 02 Aug 2022 00:48:13 -0700 From: Xiaoyao Li To: Paolo Bonzini , Isaku Yamahata , Gerd Hoffmann , =?utf-8?q?Daniel_P_=2E_Berrang=C3=A9?= , =?utf-8?q?Phi?= =?utf-8?q?lippe_Mathieu-Daud=C3=A9?= , Richard Henderson , "Michael S . Tsirkin" , Marcel Apfelbaum , Cornelia Huck , Marcelo Tosatti , Laszlo Ersek , Eric Blake Cc: Connor Kuehl , erdemaktas@google.com, kvm@vger.kernel.org, qemu-devel@nongnu.org, seanjc@google.com, xiaoyao.li@intel.com Subject: [PATCH v1 05/40] i386/tdx: Implement tdx_kvm_init() to initialize TDX VM context Date: Tue, 2 Aug 2022 15:47:15 +0800 Message-Id: <20220802074750.2581308-6-xiaoyao.li@intel.com> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20220802074750.2581308-1-xiaoyao.li@intel.com> References: <20220802074750.2581308-1-xiaoyao.li@intel.com> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Introduce tdx_kvm_init() and invoke it in kvm_confidential_guest_init() if it's a TDX VM. More initialization will be added later. Signed-off-by: Xiaoyao Li Acked-by: Gerd Hoffmann --- target/i386/kvm/kvm.c | 15 ++++++--------- target/i386/kvm/meson.build | 2 +- target/i386/kvm/tdx-stub.c | 9 +++++++++ target/i386/kvm/tdx.c | 7 +++++++ target/i386/kvm/tdx.h | 2 ++ 5 files changed, 25 insertions(+), 10 deletions(-) create mode 100644 target/i386/kvm/tdx-stub.c diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 1f4a6a4dff28..335f87e6cc59 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -54,6 +54,7 @@ #include "migration/blocker.h" #include "exec/memattrs.h" #include "trace.h" +#include "tdx.h" #include CONFIG_DEVICES @@ -2452,6 +2453,8 @@ static int kvm_confidential_guest_init(MachineState *ms, Error **errp) { if (object_dynamic_cast(OBJECT(ms->cgs), TYPE_SEV_GUEST)) { return sev_kvm_init(ms->cgs, errp); + } else if (object_dynamic_cast(OBJECT(ms->cgs), TYPE_TDX_GUEST)) { + return tdx_kvm_init(ms, errp); } return 0; @@ -2466,16 +2469,10 @@ int kvm_arch_init(MachineState *ms, KVMState *s) Error *local_err = NULL; /* - * Initialize SEV context, if required + * Initialize confidential guest (SEV/TDX) context, if required * - * If no memory encryption is requested (ms->cgs == NULL) this is - * a no-op. - * - * It's also a no-op if a non-SEV confidential guest support - * mechanism is selected. SEV is the only mechanism available to - * select on x86 at present, so this doesn't arise, but if new - * mechanisms are supported in future (e.g. TDX), they'll need - * their own initialization either here or elsewhere. + * It's a no-op if a non-SEV/non-tdx confidential guest support + * mechanism is selected, i.e., ms->cgs == NULL */ ret = kvm_confidential_guest_init(ms, &local_err); if (ret < 0) { diff --git a/target/i386/kvm/meson.build b/target/i386/kvm/meson.build index b2d7d41acde2..fd30b93ecec9 100644 --- a/target/i386/kvm/meson.build +++ b/target/i386/kvm/meson.build @@ -9,7 +9,7 @@ i386_softmmu_kvm_ss.add(files( i386_softmmu_kvm_ss.add(when: 'CONFIG_SEV', if_false: files('sev-stub.c')) -i386_softmmu_kvm_ss.add(when: 'CONFIG_TDX', if_true: files('tdx.c')) +i386_softmmu_kvm_ss.add(when: 'CONFIG_TDX', if_true: files('tdx.c'), if_false: files('tdx-stub.c')) i386_softmmu_ss.add(when: 'CONFIG_HYPERV', if_true: files('hyperv.c'), if_false: files('hyperv-stub.c')) diff --git a/target/i386/kvm/tdx-stub.c b/target/i386/kvm/tdx-stub.c new file mode 100644 index 000000000000..1df24735201e --- /dev/null +++ b/target/i386/kvm/tdx-stub.c @@ -0,0 +1,9 @@ +#include "qemu/osdep.h" +#include "qemu-common.h" + +#include "tdx.h" + +int tdx_kvm_init(MachineState *ms, Error **errp) +{ + return -EINVAL; +} diff --git a/target/i386/kvm/tdx.c b/target/i386/kvm/tdx.c index d3792d4a3d56..77e33ae01147 100644 --- a/target/i386/kvm/tdx.c +++ b/target/i386/kvm/tdx.c @@ -12,10 +12,17 @@ */ #include "qemu/osdep.h" +#include "qapi/error.h" #include "qom/object_interfaces.h" +#include "hw/i386/x86.h" #include "tdx.h" +int tdx_kvm_init(MachineState *ms, Error **errp) +{ + return 0; +} + /* tdx guest */ OBJECT_DEFINE_TYPE_WITH_INTERFACES(TdxGuest, tdx_guest, diff --git a/target/i386/kvm/tdx.h b/target/i386/kvm/tdx.h index 415aeb5af746..c8a23d95258d 100644 --- a/target/i386/kvm/tdx.h +++ b/target/i386/kvm/tdx.h @@ -16,4 +16,6 @@ typedef struct TdxGuest { uint64_t attributes; /* TD attributes */ } TdxGuest; +int tdx_kvm_init(MachineState *ms, Error **errp); + #endif /* QEMU_I386_TDX_H */